Isaiah 50:4-9 / Matthew 26:14-25
Every act and deed is done with an intention or purpose.
We don't act or do something with a blank mind or that we don't really know what we are doing.
And whatever we do, we have to take responsibility for it.
Even if we are forced to do it, or that we are under duress, it is still our choice whether to do it or not.
As to why did Judas wanted to betray Jesus, there were no clear indications or reasons given in the Scriptures.
There were various suggestions but Judas himself did not say what the reason was.
But from Scripture accounts, Judas knew he was handing over Jesus to the chief priests for thirty silver pieces and then he looked for an opportunity to betray Jesus.
And even at the Last Supper, Judas was so adamant on what he intended to do that he didn't even flinch when it came to his turn to declare his innocence.
All this tells us that we ourselves can be so obsessed about what we intend to do that we would disregard the morality and consequence of our actions.
We can betray Jesus by not admitting to our wrong-doings or think that we are not that sinful as compared to others.
Yes, we have sinned and done wrong, and denied and betrayed the love of God for us.
Let us be contrite and ask for forgiveness so that we can be healed by God's love and be His faithful and humble people.